JP2011254064A - Surface light emitting device - Google Patents

Surface light emitting device Download PDF

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JP2011254064A
JP2011254064A JP2011056120A JP2011056120A JP2011254064A JP 2011254064 A JP2011254064 A JP 2011254064A JP 2011056120 A JP2011056120 A JP 2011056120A JP 2011056120 A JP2011056120 A JP 2011056120A JP 2011254064 A JP2011254064 A JP 2011254064A
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chromaticity
leds
luminous flux
population
channels
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Yuto Suzuki
勇斗 鈴木
Tomohisa Tajiri
智久 田尻
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Funai Electric Co Ltd
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Funai Electric Co Ltd
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Priority to JP2011056120A priority Critical patent/JP2011254064A/en
Priority to US13/094,958 priority patent/US8608338B2/en
Priority to EP11164691.5A priority patent/EP2385293B1/en
Publication of JP2011254064A publication Critical patent/JP2011254064A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/20—Electroluminescent [EL] light sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Planar Illumination Modules (AREA)
  • Led Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a surface light emitting device whose chromaticity and luminous flux are not out of specifications while all of a large number of LEDs supplied can be used when the large number of LEDs having variations due to individual differences in a chromaticity range, a luminous flux, or the like are supplied.SOLUTION: A required number of LEDs included in a light source unit are sorted into and allocated to individual channels ch1, ch2, ch3 and ch4 of a bar. LEDs having high chromaticity and luminous flux specifications are allocated to the inside channels ch2 and ch3, and a mixture of LEDs having high chromaticity and luminous flux specifications and LEDs having low chromaticity and luminous flux specifications are allocated to the outside channels ch1 and ch4.

Description

本発明は、面発光装置、特に、色度座標上の色度範囲で複数の色度母集団にランク分けされ、かつ、光束数値に応じた複数の光束母集団にランク分けされている多数のＬＥＤの中から選択された所要数のＬＥＤ（発光ダイオード）を有し、それらのＬＥＤが帯板状のバーに並べて搭載されてなる光源ユニットを備える面発光装置に関する。   The present invention relates to a surface light emitting device, in particular, a plurality of chromaticity populations ranked in a chromaticity range on chromaticity coordinates, and a plurality of luminous flux populations according to luminous flux values. The present invention relates to a surface light emitting device having a required number of LEDs (light emitting diodes) selected from LEDs and including a light source unit in which these LEDs are mounted side by side on a strip-shaped bar.

面発光装置の光源として採用されるＬＥＤは、その生産段階で固体差により色度や光束にばらつきが生じる。このばらつきは、液晶表示モジュールとして見た場合に、ディスプレイの見た目の明暗の差や色味の差として明らかに識別できるレベルに達している。そこで、ＬＥＤを光源とする光源ユニットを組み込んだ面発光装置を製造するときには、国際照明委員会による色度図（ＣＩＥ表色系におけるｘｙ色度図）の色度座標を使って多数のＬＥＤに対してランク分けがなされる。また、光束（ｌｍ）についても同様に光束数値に応じたランク分けがなされる。   LEDs used as light sources for surface emitting devices have variations in chromaticity and light flux due to solid differences in the production stage. This variation has reached a level that can be clearly identified as a difference in visual brightness or a difference in color when viewed as a liquid crystal display module. Therefore, when manufacturing a surface light emitting device incorporating a light source unit that uses LEDs as a light source, a large number of LEDs are used by using chromaticity coordinates of a chromaticity diagram (xy chromaticity diagram in the CIE color system) by the International Commission on Illumination. Ranks are made for it. Similarly, the luminous flux (lm) is ranked according to the numerical value of the luminous flux.

従来では、面発光装置の発光色のばらつきや輝度をできるだけ一様にするための対策として、ＬＥＤの色度（ＣＩＥ）や光束（ｌｍ）、順方向電圧（Ｖｆ）の仕様を細かく限定することが行われていた。また、色度や光束にばらつきがある多数のＬＥＤを混在（ミキシング）させた光源ユニットを用いて、面発光装置の全体（液晶表示モジュール）の発光色のばらつきや輝度をできるだけ一様にするという対策が講じられることもあり、この対策では、色度や光束、順方向電圧の仕様が異なるＬＥＤを交互に並べるというミキシング方法が採られていた。   Conventionally, as a measure for making the light emission color variation and luminance of the surface light emitting device as uniform as possible, the specifications of LED chromaticity (CIE), luminous flux (lm), and forward voltage (Vf) are finely limited. Was done. In addition, using a light source unit in which a large number of LEDs having variations in chromaticity and luminous flux are mixed (mixed), the variation in emission color and luminance of the entire surface light emitting device (liquid crystal display module) are made as uniform as possible. In some cases, countermeasures have been taken. In this countermeasure, a mixing method in which LEDs having different specifications of chromaticity, luminous flux, and forward voltage are arranged alternately is employed.

一方、液晶モジュールのバックライト（面発光装置に相当）の製造に際して、供給されたばらつきのあるＬＥＤの利用率が高くなるようにするための対策を提案している先行例があった（たとえば、特許文献１参照）。そのほか、発光色のばらつきを低減するための種々の研究も行われている（たとえば、特許文献２、特許文献３参照）。   On the other hand, when manufacturing a backlight of a liquid crystal module (corresponding to a surface light emitting device), there has been a prior example that proposes measures for increasing the utilization rate of supplied distributed LEDs (for example, Patent Document 1). In addition, various studies for reducing variations in emission color have been conducted (see, for example, Patent Document 2 and Patent Document 3).

特開２００８−１４７５６３号公報JP 2008-147563 A 特開２００９−１５８９０３号公報JP 2009-158903 A 特開２００１−２２２２４２号公報JP 2001-222242 A

しかしながら、従来のように面発光装置の発光色や光束のばらつきをできるだけ一様にするためにＬＥＤの色度や光束、順方向電圧の仕様を細かく限定するという対策を講じると、色度座標上や光束数値に応じてランク分けされた多数のＬＥＤの中で使用可能なＬＥＤの数が限定されてしまうので、無駄なＬＥＤが発生することによるコストアップが避けられないという問題があった。   However, if measures are taken to finely limit the specifications of LED chromaticity, luminous flux, and forward voltage in order to make the emission color and luminous flux variations of the surface light emitting device as uniform as possible, In addition, since the number of usable LEDs is limited among the many LEDs ranked according to the numerical value of the luminous flux, there is a problem that an increase in cost due to generation of useless LEDs cannot be avoided.

また、色度座標上で略矩形の輪郭線を有する色度範囲内で細かくランク分けされた多数のＬＥＤから任意のＬＥＤを選択して面発光装置の光源ユニットに使用するだけでは、光源ユニットに使用されているＬＥＤの多くが、上記輪郭線のコーナ付近（色度範囲内の偏った位置）にランク分けされた色度母集団に属するＬＥＤであるという場合や、光束数値の小さい範囲にランク分けされた光束母集団に属するＬＥＤであるという場合も起こり得る。これらの場合には、面発光装置が色度スペックや光束スペックを満たさなくなってスペックアウトとなってしまうという問題があった。また、順方向電圧（Ｖｆ）の高いＬＥＤが集中して使用された場合には消費電力が大きくなってしまう。   In addition, if an arbitrary LED is selected from a large number of LEDs finely ranked within a chromaticity range having a substantially rectangular outline on the chromaticity coordinates and used for the light source unit of the surface light emitting device, the light source unit Many of the LEDs used are LEDs that belong to the chromaticity population ranked near the corner of the contour line (biased position in the chromaticity range), There may be a case where the LEDs belong to the divided luminous flux population. In these cases, there is a problem that the surface light emitting device does not satisfy the chromaticity specification and the luminous flux specification and is out of specification. In addition, when LEDs with high forward voltage (Vf) are used in a concentrated manner, power consumption increases.

ところで、面発光装置の製造に際して、供給された多数のＬＥＤの一つ一つを、上記した色度範囲内で複数の色度母集団に細かくランク分けし、それらのＬＥＤの一つ一つを光束数値に応じて複数の光束母集団に細かくランク分けし、さらに順方向電圧の数値に応じてランク分けした上で、それらの各ランクに属するＬＥＤを適切に組み合わせて光源ユニットの帯板状のバーでの配置位置を指定するという対策を行うと、無駄なＬＥＤが発生することを抑制しつつ面発光装置の全体の発光色や光束のばらつきを抑えることができるとも考えられる。   By the way, when manufacturing the surface emitting device, each of the supplied many LEDs is finely ranked into a plurality of chromaticity populations within the above chromaticity range, and each of those LEDs is assigned. According to the numerical value of the luminous flux, it is finely divided into a plurality of luminous flux populations, and further ranked according to the numerical value of the forward voltage, and then the LED belonging to each rank is appropriately combined to form a strip-like shape of the light source unit. If the measure of designating the arrangement position on the bar is taken, it is considered that the variation of the entire emission color and luminous flux of the surface light emitting device can be suppressed while the generation of useless LEDs is suppressed.

しかしながら、たとえば、供給された多数のＬＥＤが、色度範囲内で４行４列の１６種類の色度母集団にランク分けされ、光束数値によって６種類の光束母集団にランク分けされ、さらに７種類の順方向電圧の数値によってランク分けされているという場合には、それらのＬＥＤについて、合計で６７２通りの組み合わせが考えられることから、これをバーに位置指定して配置することは不可能に近いということが云える。   However, for example, a large number of supplied LEDs are ranked into 16 types of chromaticity populations of 4 rows and 4 columns within the chromaticity range, and are ranked into 6 types of luminous flux populations according to luminous flux values, and further 7 In the case of ranking according to the numerical value of the forward voltage of the kind, since there are 672 combinations in total for those LEDs, it is impossible to position and arrange them on the bar. It can be said that it is close.

この点を解決するには、色度母集団や光束母集団のランク数を減少させることによって、バーでのＬＥＤの位置指定を簡略化することが有益である。   In order to solve this problem, it is beneficial to simplify the LED position designation in the bar by reducing the rank number of the chromaticity population and the luminous flux population.

本発明は、以上の状況の下で、光源ユニットのバーの長手方向中央部に配置されるＬＥＤのスペックが、面発光装置の全体のスペックに影響を及ぼしやすいという事実に着目してなされたものである。   Under the above circumstances, the present invention has been made by paying attention to the fact that the specifications of the LEDs arranged in the central portion in the longitudinal direction of the bar of the light source unit tend to affect the overall specifications of the surface emitting device. It is.

すなわち、本発明は、色度範囲や光束などにばらつきのある多数のＬＥＤが供給された場合において、供給された多数のＬＥＤの全部を使用対象とすることができて無駄なＬＥＤの発生を抑制し、併せて、ＬＥＤの一つ一つの細分化された仕様を用いる必要性をなくすることによってコストダウンを図ることが可能でありながら、色度や光束がスペックアウトすることのない面発光装置を提供することを目的とする。   That is, according to the present invention, when a large number of LEDs with variations in chromaticity range, luminous flux, and the like are supplied, all of the supplied large number of LEDs can be used, and generation of useless LEDs is suppressed. In addition, it is possible to reduce the cost by eliminating the need to use the individual specifications of each LED, and the surface emitting device that does not cause chromaticity or luminous flux to be out of spec. The purpose is to provide.

請求項１の発明に係る面発光装置は、色度座標上の色度範囲内で複数の色度母集団にランク分けされ、かつ、光束数値に応じた複数の光束母集団にランク分けされた多数のＬＥＤと、多数の上記ＬＥＤの中から選択された所要数のＬＥＤが帯板状のバーに並べて搭載されてなる光源ユニットと、を備えている。   The surface light emitting device according to the invention of claim 1 is ranked into a plurality of chromaticity populations within a chromaticity range on the chromaticity coordinates, and is ranked into a plurality of luminous flux populations according to the luminous flux values. A plurality of LEDs, and a light source unit in which a required number of LEDs selected from the plurality of LEDs are mounted side by side on a strip-shaped bar.

また、上記バーの長手方向複数箇所に並び、上記光源ユニットに含まれる所要数の上記ＬＥＤが振り分けて割り当てられている個々のチャンネルを含み、それらのチャンネルが、複数箇所の上記チャンネルの並び方向中央部に位置している内側チャンネルとその内側チャンネルを挟む両側に位置している外側チャンネルとに区画されている。   In addition, it includes individual channels that are arranged at a plurality of locations in the longitudinal direction of the bar and that are allocated with the required number of LEDs included in the light source unit, and the channels are arranged in the center in the alignment direction of the channels at a plurality of locations. It is divided into an inner channel located in the section and outer channels located on both sides sandwiching the inner channel.

そして、上記内側チャンネルに、上記色度母集団及び上記光束母集団の全部から選択された色度スペックと光束スペックの高いＬＥＤが割り当てられている。   An LED having a high chromaticity specification and a high luminous flux specification selected from all of the chromaticity population and the luminous flux population is assigned to the inner channel.

この構成であると、光源ユニットに含まれる所要数のＬＥＤが、バーの長手方向複数箇所に並んだ個々のチャンネルに振り分けて割り当てられているので、バーでの個々のＬＥＤの配置位置を個別に決定する必要がなく、各チャンネルごとに個々のＬＥＤの配置位置を決定することができるので、ＬＥＤの配置のための労力が軽減されてそのための工程が簡略化される。   With this configuration, the required number of LEDs included in the light source unit are allocated and allocated to the individual channels arranged in a plurality of positions in the longitudinal direction of the bar, so the arrangement positions of the individual LEDs on the bar are individually assigned. Since it is not necessary to determine the position of the individual LEDs for each channel, the labor for the arrangement of the LEDs can be reduced and the process for that can be simplified.

また、光源ユニットのバーの内側チャンネルに割り当てられたＬＥＤの色度スペックと光束スペックとが高く、しかも、内側チャンネルに割り当てられたＬＥＤのスペックがモジュールとしての面発光装置の全体のスペックに影響を及ぼすので、当該面発光装置に要求される色度スペックと光束スペックとが満たされる。すなわち、外側チャンネルに複数の色度母集団及び複数の光束母集団の全部から任意に選択されたＬＥＤが割り当てられているとしても、それによって面発光装置がスペックアウトすることはない。   Moreover, the chromaticity specification and luminous flux specification of the LED assigned to the inner channel of the bar of the light source unit are high, and the specification of the LED assigned to the inner channel affects the overall specification of the surface emitting device as a module. Therefore, chromaticity specifications and luminous flux specifications required for the surface light emitting device are satisfied. That is, even if LEDs arbitrarily selected from the plurality of chromaticity populations and the plurality of light flux populations are allotted to the outer channel, the surface light emitting device is not speculated out.

請求項２の発明に係る発明では、上記外側チャンネルに、上記色度母集団及び上記光束母集団の全部から任意に選択されたＬＥＤが割り当てられている。この構成であると、内側チャンネルに、上記色度母集団及び上記光束母集団の全部から選択された色度スペックと光束スペックの高いＬＥＤが割り当てられ、しかも、外側チャンネルには色度母集団及び光束母集団の全部から任意に選択されたＬＥＤが割り当てられるために、供給された多数のＬＥＤの全部を使用することが可能になって、無駄なＬＥＤの発生が抑制される。   In the invention according to claim 2, LEDs arbitrarily selected from all of the chromaticity population and the luminous flux population are assigned to the outer channel. With this configuration, the chromaticity specification selected from all of the chromaticity population and the luminous flux population and a high luminous flux LED are assigned to the inner channel, and the chromaticity population and the outer channel are assigned to the outer channel. Since LEDs arbitrarily selected from the entire luminous flux population are assigned, all of the supplied many LEDs can be used, and generation of useless LEDs is suppressed.

請求項３の発明に係る面発光装置は、色度座標上の色度範囲内で複数の色度母集団にランク分けされ、かつ、光束数値に応じた複数の光束母集団にランク分けされた多数のＬＥＤと、多数の上記ＬＥＤの中から選択された所要数のＬＥＤが帯板状のバーに並べて搭載されてなる光源ユニットと、を備える。   The surface emitting device according to the invention of claim 3 is ranked into a plurality of chromaticity populations within a chromaticity range on the chromaticity coordinates, and is ranked into a plurality of luminous flux populations according to the luminous flux values. A plurality of LEDs, and a light source unit in which a required number of LEDs selected from the plurality of LEDs are mounted side by side on a strip-shaped bar.

また、上記バーの長手方向複数箇所に並び、上記光源ユニットに含まれる所要数の上記ＬＥＤが振り分けて割り当てられている個々のチャンネルを含み、それらのチャンネルが、複数箇所の上記チャンネルの並び方向中央部に位置している内側チャンネルとその内側チャンネルを挟む両側に位置している外側チャンネルとに区画されている。   In addition, it includes individual channels that are arranged at a plurality of locations in the longitudinal direction of the bar and that are allocated with the required number of LEDs included in the light source unit, and the channels are arranged in the center in the alignment direction of the channels at a plurality of locations. It is divided into an inner channel located in the section and outer channels located on both sides sandwiching the inner channel.

そして、上記内側チャンネルに、全部の上記色度母集団を上記色度座標上で中央部に位置する第１色度母集団群とそれを取り囲んで位置する第２色度母集団群との２段階にランク分けすることによって得られる上記第１色度母集団群から任意に選択されたＬＥＤが割り当てられ、上記内側チャンネルに含まれるＬＥＤの全部が、複数の上記光束母集団を光束数値の大きい第１光束母集団群とそれよりも光束数値の小さい第２光束母集団群との２段階にランク分けすることによって得られる上記第１光束母集団群に属している。   Then, in the inner channel, all of the chromaticity populations, ie, a first chromaticity population group located in the center on the chromaticity coordinates and a second chromaticity population group located surrounding the first chromaticity population group. LEDs arbitrarily selected from the first chromaticity population group obtained by ranking in stages are assigned, and all of the LEDs included in the inner channel have a plurality of luminous flux populations having a large luminous flux value. It belongs to the first luminous flux population group obtained by ranking in two stages, the first luminous flux population group and the second luminous flux population group having a smaller luminous flux value.

この発明によると、色度母集団が第１色度母集団群及び第２色度母集団群の２段階にランク分けされるようになって、ＬＥＤの仕様の細分化が回避される。光束母集団も第１光束母集団群及び第２光束母集団群の２段階にランク分けされるようになって、ＬＥＤの仕様の細分化が回避される。そのため、供給された多数のＬＥＤが、色度座標上の色度範囲内で４行４列の１６種類の色度母集団に細かくランク分けされ、光束数値によって６種類の光束母集団に細かくランク分けされているとしても、バーに位置指定して配置するためのＬＥＤは、２段階にランク分けされた第１又は第２の色度母集団群、第１又は第２の光束母集団群から選択するだけで済むようになって位置指定が容易になる。   According to the present invention, the chromaticity population is ranked in two stages, ie, the first chromaticity population group and the second chromaticity population group, thereby avoiding segmentation of LED specifications. The luminous flux population is also ranked in two stages, the first luminous flux population group and the second luminous flux population group, so that segmentation of LED specifications is avoided. Therefore, a large number of supplied LEDs are finely ranked into 16 types of chromaticity populations in 4 rows and 4 columns within the chromaticity range on the chromaticity coordinates, and finely ranked into 6 types of luminous flux populations according to the luminous flux values. Even if the LEDs are divided, the LEDs for specifying the positions on the bars are arranged from the first or second chromaticity population group, the first or second luminous flux population group ranked in two stages. Position selection is made easier by simply selecting.

また、この発明によっても、上記同様に、光源ユニットのバーの内側チャンネルに割り当てられたＬＥＤが当該面発光装置に要求される色度スペックと光束スペックとを満たし、しかも、内側チャンネルに割り当てられたＬＥＤのスペックがモジュールとしての面発光装置の全体のスペックに影響を及ぼすので、外側チャンネルに割り当てられたＬＥＤに、要求スペックを満たさないＬＥＤが含まれているとしても、それによって面発光装置がスペックアウトすることはない。そして、外側チャンネルには色度母集団及び光束母集団の全部から任意に選択されたＬＥＤが割り当てられるために、供給された多数のＬＥＤの全部を使用することが可能になって、無駄なＬＥＤの発生が抑制される。   Also according to the present invention, as described above, the LED assigned to the inner channel of the bar of the light source unit satisfies the chromaticity specification and luminous flux specification required for the surface emitting device, and is assigned to the inner channel. Since the specification of the LED affects the overall specification of the surface light emitting device as a module, even if the LED assigned to the outer channel includes an LED that does not meet the required specification, the surface light emitting device will Never out. Since the LEDs arbitrarily selected from the chromaticity population and the luminous flux population are allotted to the outer channel, it is possible to use all of the supplied many LEDs, and useless LEDs Is suppressed.

請求項４の発明に係る面発光装置は、請求項３に記載した面発光装置において、上記外側チャンネルに、第１及び第２の上記色度母集団群の全範囲から任意に選択されたＬＥＤが割り当てられ、上記外側チャンネルに含まれるＬＥＤが、第１及び第２の上記光束母集団群の全範囲から任意に選択されている。この構成であると、外側チャンネルには複数の色度母集団や複数の光束母集団の全部から任意に選択されたＬＥＤが割り当てられるために、供給された多数のＬＥＤの全部を使用することが可能になって、無駄なＬＥＤの発生が抑制される。   A surface light emitting device according to a fourth aspect of the present invention is the surface light emitting device according to the third aspect, wherein the outer channel is an LED arbitrarily selected from the entire range of the first and second chromaticity population groups. And the LEDs included in the outer channel are arbitrarily selected from the entire range of the first and second luminous flux population groups. With this configuration, since the LEDs arbitrarily selected from the plurality of chromaticity populations and the plurality of light flux populations are assigned to the outer channel, it is possible to use all of the supplied many LEDs. It becomes possible and generation | occurrence | production of useless LED is suppressed.

請求項５の発明に係る面発光装置は、請求項３又は請求項４に記載した面発光装置において、上記光源ユニットに含まれる所要数の上記ＬＥＤが、上記バーの長手方向に並んだ４つのチャンネルに振り分けて割り当てられ、４つの上記チャンネルのうちの中央の２つのチャンネルが上記内側チャンネルとして定められ、それらの２つのチャンネルを挟む両側に位置する２つのチャンネルが上記外側チャンネルとして定められている。   A surface light emitting device according to a fifth aspect of the present invention is the surface light emitting device according to the third or fourth aspect, wherein the required number of the LEDs included in the light source unit are arranged in the longitudinal direction of the bar. The two channels are allocated and allocated, and the center two channels among the four channels are defined as the inner channels, and the two channels located on both sides of the two channels are defined as the outer channels. .

本発明に係る面発光装置は、たとえば次のＡ〜Ｅの操作を経て製造することができる。 Ａ．上記バーの長手方向複数箇所に所要数のＬＥＤを振り分けて割り当てるためのチャンネルを区画形成すること。
Ｂ．全部の上記色度母集団を上記色度座標上で中央部に位置する第１色度母集団群とそれを取り囲んで位置する第２色度母集団群との２段階にランク分けすることと、
Ｃ．複数の上記光束母集団を光束数値の大きい第１光束母集団群とそれよりも光束数値の小さい第２光束母集団群との２段階にランク分けすること。
Ｄ．複数箇所の上記チャンネルの並び方向中央部に位置している内側チャンネルに、上記第１色度母集団群及び上記第１光束集団群から任意に選択されたＬＥＤを割り当てること。
Ｅ．上記内側チャンネルを挟む両側に位置している外側チャンネルに、第１及び第２の上記色度母集団群及び第１及び第２の上記光束母集団群の全範囲から任意に選択されたＬＥＤを割り当てること。 The surface light-emitting device according to the present invention can be manufactured, for example, through the following operations A to E. A. Partitioning and forming channels for distributing and assigning a required number of LEDs to a plurality of longitudinal positions of the bar.
B. Ranking all the chromaticity populations in two stages: a first chromaticity population group located in the center of the chromaticity coordinates and a second chromaticity population group located surrounding the first chromaticity population group; ,
C. Rank the plurality of luminous flux populations into two stages: a first luminous flux population group having a large luminous flux value and a second luminous flux population group having a smaller luminous flux value.
D. An LED arbitrarily selected from the first chromaticity population group and the first luminous flux group group is assigned to an inner channel located in the center in the arrangement direction of the plurality of channels.
E. LEDs arbitrarily selected from the entire ranges of the first and second chromaticity population groups and the first and second luminous flux population groups are arranged on the outer channels located on both sides of the inner channel. To assign.

本発明に係る面発光装置によると、色度範囲や光束などの固体差に起因するばらつきのある多数のＬＥＤが供給された場合において、供給された多数のＬＥＤの全部を使用対象とすることが可能でありながら、色度がスペックアウトしたり光束がスペックアウトしたりすることのない面発光装置を提供することが可能になる。したがって、供給されたＬＥＤの中の無駄なＬＥＤの発生が抑制されてコストダウンが図られる。また、細分化された仕様の多数のＬＥＤの中から所望仕様のＬＥＤを選択するという煩わしい作業が回避されるという面からもコストダウンを図ることが可能になる。   According to the surface light emitting device according to the present invention, when a large number of LEDs that vary due to solid differences such as the chromaticity range and the luminous flux are supplied, all of the supplied large number of LEDs can be used. Although possible, it is possible to provide a surface light-emitting device in which the chromaticity does not spec out or the luminous flux does not spec out. Therefore, generation | occurrence | production of useless LED in the supplied LED is suppressed, and cost reduction is achieved. Further, it is possible to reduce the cost from the viewpoint of avoiding the troublesome work of selecting the LED having the desired specification from among the many LEDs having the detailed specification.

本発明に係る面発光装置の基本コンセプトを示した説明図である。It is explanatory drawing which showed the basic concept of the surface emitting device which concerns on this invention. 色度座標上の色度範囲でのＬＥＤのランク分けを示した色度図である。It is a chromaticity diagram showing LED ranking in the chromaticity range on the chromaticity coordinates. 光束数値による光束母集団のランク分けを示した説明図である。It is explanatory drawing which showed the ranking of the light beam population by a light beam numerical value. 実施形態の面発光装置の光源ユニットのチャンネルごとに振り分けられるＬＥＤの色度母集団と光束母集団の種類を示した説明図である。It is explanatory drawing which showed the kind of chromaticity population and luminous flux population of LED distributed for every channel of the light source unit of the surface emitting device of embodiment.

図１は、本発明に係る面発光装置の基本コンセプトを示した説明図である。同図の面発光装置は、帯板状のバー２とこのバー２に並べて搭載されたＬＥＤとを備える光源ユニット１を備えている。そして、バー２に並べて搭載された上記ＬＥＤが、導光板３の入光面３１に対峙している。この面発光装置によると、光源ユニット１に含まれるＬＥＤから出た光が、入光面３１を経て導光板３に導入され、その導光板３や図示していない光学シートなどの作用で導光板３の表面で面発光する。   FIG. 1 is an explanatory view showing a basic concept of a surface light emitting device according to the present invention. The surface light emitting device of the figure includes a light source unit 1 including a strip-shaped bar 2 and LEDs mounted side by side on the bar 2. The LEDs mounted side by side on the bar 2 face the light incident surface 31 of the light guide plate 3. According to this surface light emitting device, the light emitted from the LEDs included in the light source unit 1 is introduced into the light guide plate 3 through the light incident surface 31, and the light guide plate 3 or the optical sheet (not shown) acts as a light guide plate. Surface emission occurs on the surface of 3.

図１の面発光装置において、光源ユニット１に含まれるＬＥＤは、バー２の長手方向複数箇所に並んだ個々のチャンネルに振り分けて割り当てられている。具体的には、バー２の長手方向の４箇所にｃｈ１，ｃｈ２，ｃｈ３，ｃｈ４の４つのチャンネルを区画形成し、それぞれのチャンネルｃｈ１〜４に対して所要数のＬＥＤが位置指定されて配置されている。この面発光装置では、光源ユニット１のバー２の長手方向中央部のチャンネルｃｈ２，ｃｈ３に配置されるＬＥＤのスペックが、モジュールとしての面発光装置の全体のスペックに影響を及ぼす。このことに着目し、それらのチャンネルｃｈ２，ｃｈ３に、色度スペック及び光束スペックの高いＬＥＤを配置し、その両側のチャンネルｃｈ１，ｃｈ４には、供給された多数のＬＥＤの中から任意に選択したＬＥＤを配置する、というのが、本発明に係る面発光装置の基本コンセプトである。なお、図１において、符号Ｙ２，Ｙ３はチャンネルｃｈ２，ｃｈ３に含まれるＬＥＤから出る光を示し、符号Ｙ１，Ｙ４はチャンネルｃｈ１，ｃｈ４に含まれるＬＥＤから出る光を説明的に示したものである。   In the surface light emitting device of FIG. 1, the LEDs included in the light source unit 1 are allocated to the individual channels arranged in a plurality of locations in the longitudinal direction of the bar 2. Specifically, four channels of ch1, ch2, ch3, and ch4 are defined at four locations in the longitudinal direction of the bar 2, and a required number of LEDs are positioned and arranged for each of the channels ch1 to ch4. ing. In this surface light emitting device, the specifications of the LEDs arranged in the channels ch2 and ch3 at the center in the longitudinal direction of the bar 2 of the light source unit 1 affect the overall specifications of the surface light emitting device as a module. Focusing on this, LEDs with high chromaticity specifications and luminous flux specifications are arranged in the channels ch2 and ch3, and the channels ch1 and ch4 on both sides thereof are arbitrarily selected from a large number of supplied LEDs. Arranging the LEDs is the basic concept of the surface emitting device according to the present invention. In FIG. 1, symbols Y2 and Y3 indicate light emitted from the LEDs included in channels ch2 and ch3, and symbols Y1 and Y4 illustrate light emitted from the LEDs included in channels ch1 and ch4. .

上記した４箇所のチャンネルｃｈ１〜４に割り当てられているＬＥＤは、色度座標上の色度範囲内で複数の色度母集団にランク分けされ、しかも、光束数値に応じた複数の光束母集団にランク分けされた多数のＬＥＤの中から選択されている。ここで、複数の色度母集団や光束母集団にランク分けされた多数のＬＥＤは、面発光装置を製造するに当たってその製造工程に供給された一群のＬＥＤのことである。   The LEDs assigned to the four channels ch1 to ch4 are ranked into a plurality of chromaticity populations within the chromaticity range on the chromaticity coordinates, and a plurality of luminous flux populations according to the luminous flux values. Is selected from a number of LEDs ranked in Here, a large number of LEDs ranked into a plurality of chromaticity populations and luminous flux populations are a group of LEDs supplied to the manufacturing process in manufacturing the surface emitting device.

図２は供給された多数のＬＥＤの色度座標上の色度範囲でのランク分けを示している。また、図３は供給された多数のＬＥＤの光束母集団のランク分けを示している。   FIG. 2 shows the ranking in the chromaticity range on the chromaticity coordinates of a large number of supplied LEDs. FIG. 3 also shows the ranking of the luminous flux population of a large number of supplied LEDs.

図２の色度図では、供給された多数のＬＥＤが、色度座標上の色度範囲内で４行４列の１６種類の色度母集団に細かくランク分けされている。図例では、１６種類の色度母集団が次のようにランク分けされている。すなわち、供給された多数のＬＥＤが、色度座標上で略矩形の輪郭線Ｌを有する色度範囲Ｓの内部で１６種類の色度母集団にランク分けされている。図示されている１６種類の色度母集団には、「親番号−子番号」の形式で、
１−１，１−２，１−３，１−４，
２−１，２−２，２−３，２−４，
３−１，３−２、３−３，３−４，
４−１，４−２，４−３，４−４
の符号が付されている。 In the chromaticity diagram of FIG. 2, a large number of supplied LEDs are finely ranked into 16 types of chromaticity populations in 4 rows and 4 columns within the chromaticity range on the chromaticity coordinates. In the illustrated example, 16 types of chromaticity populations are ranked as follows. That is, a large number of supplied LEDs are ranked into 16 types of chromaticity populations within a chromaticity range S having a substantially rectangular outline L on chromaticity coordinates. The 16 types of chromaticity population shown in the figure are in the form of “parent number-child number”,
1-1, 1-2, 1-3, 1-4,
2-1, 2-2, 2-3, 2-4
3-1, 3-2, 3-3, 3-4
4-1, 4-2, 4-3, 4-4
The code | symbol is attached | subjected.

図２の色度図によって判るように、親番号が「１」のランク１−１，１−２，１−３，１−４は、略矩形の輪郭線Ｌで囲まれた色度範囲において、１つのコーナｋ１側に偏って位置していて、そのうちの１−１，１−２，１−４の３つのランクに属する色度母集団の範囲が輪郭線Ｌの相隣接する２辺ｈ１，ｈ２に接している。親番号が「２」のランク２−１，２−２，２−３，２−４は、略矩形の輪郭線Ｌで囲まれた色度範囲において、他の１つのコーナｋ２側に偏って位置していて、そのうちの２−１，２−２，２−３の３つのランクに属する色度母集団の範囲が輪郭線Ｌの相隣接する２辺ｈ２，ｈ３に接している。親番号が「３」のランク３−１，３−２，３−３，３−４は、略矩形の輪郭線Ｌで囲まれた色度範囲において、さらに他の１つのコーナｋ４側に偏って位置していて、そのうちの３−２，３−３，３−４の３つのランクに属する色度母集団の範囲が輪郭線Ｌの相隣接する２辺ｈ４，ｈ１に接している。さらに、親番号が「４」のランク４−１，４−２，４−３，４−４は、略矩形の輪郭線Ｌで囲まれた色度範囲において、さらに他の１つのコーナｋ３側に偏って位置していて、そのうちの４−１，４−３，４−４の３つのランクに属する色度母集団の範囲が輪郭線Ｌの相隣接する２辺ｈ３，ｈ４に接している。   As can be seen from the chromaticity diagram of FIG. 2, the ranks 1-1, 1-2, 1-3, and 1-4 having the parent number “1” are in the chromaticity range surrounded by the substantially rectangular outline L. Two sides h1 adjacent to each other in the range of chromaticity populations that are located on one corner k1 side and belong to the three ranks 1-1, 1-2, and 1-4 of the contour line L , H2. The ranks 2-1, 2-2, 2-3, 2-4 with the parent number “2” are biased toward the other corner k <b> 2 in the chromaticity range surrounded by the substantially rectangular outline L. The chromaticity population ranges belonging to the three ranks 2-1, 2-2, and 2-3 are in contact with the adjacent two sides h2 and h3 of the contour line L. The ranks 3-1, 3-2, 3-3, 3-4 with the parent number “3” are further biased toward the other corner k4 in the chromaticity range surrounded by the substantially rectangular outline L. The chromaticity population ranges belonging to the three ranks 3-2, 3-3 and 3-4 are in contact with the adjacent two sides h4 and h1 of the contour line L. Furthermore, ranks 4-1, 4-2, 4-3, and 4-4 with the parent number “4” are in the other chromaticity range surrounded by the substantially rectangular outline L, on the other corner k3 side. The chromaticity population ranges belonging to the three ranks 4-1, 4-3 and 4-4 are in contact with the two adjacent sides h3 and h4 of the contour line L. .

この実施形態に係る面発光装置の製造工程では、色度範囲Ｓ内に含まれる全部の色度母集団、すなわち、親番号が１〜４で、子番号が１〜４である全部の色度母集団を色度座標上で中央部に位置する第１色度母集団群Ａとそれを取り囲んで位置する第２色度母集団群Ｂとの２段階にランク分けすることが行われる。この実施形態では、第１色度母集団群Ａにランク１−３，２−４，３−１，４−２の４種類の色度母集団が含まれている。この第１色度母集団群Ａに含まれるＬＥＤは、色度範囲Ｓの中央部に隣接して分布している色度スペックの高いＬＥＤである。第２色度母集団群Ｂには、ランク１−１，１−２，１−４，２−１，２−２，２−３，３−２，３−３，３−４，４−１，４−３，４−４の１２種類の色度母集団が含まれている。この第２色度母集団群Ｂに含まれるＬＥＤは、第１色度母集団群Ａの周囲を取り囲む位置で隣接して分布していて、第１色度母集団群Ａよりも色度スペックが低い。   In the manufacturing process of the surface light emitting device according to this embodiment, all chromaticity populations included in the chromaticity range S, that is, all chromaticities having a parent number of 1 to 4 and a child number of 1 to 4. The population is ranked in two stages: a first chromaticity population group A located in the center of the chromaticity coordinates and a second chromaticity population group B located surrounding it. In this embodiment, the first chromaticity population group A includes four types of chromaticity populations of ranks 1-3, 2-4, 3-1, 4-2. The LEDs included in the first chromaticity population group A are LEDs with high chromaticity specifications that are distributed adjacent to the center of the chromaticity range S. The second chromaticity population group B includes ranks 1-1, 1-2, 1-4, 2-1, 2-2, 2-3, 3-2, 3-3, 3-4, 4- 12 types of chromaticity populations of 1,4-3 and 4-4 are included. The LEDs included in the second chromaticity population group B are distributed adjacent to each other at positions surrounding the first chromaticity population group A, and the chromaticity specification is more than that of the first chromaticity population group A. Is low.

一方、供給された多数のＬＥＤの光束母集団のランク分けを示した図３では、同図のＢｉｎ Ｒｕｎｋ（ｏｌｄ）の欄に示したように、供給された多数のＬＥＤが、符号２２，２３，２４，２５，２６，２７によって６種類の光束母集団に細かくランク分けされている。   On the other hand, in FIG. 3 showing the ranking of the luminous flux population of many supplied LEDs, as shown in the Bin Runk (old) column of FIG. , 24, 25, 26, and 27, they are finely classified into six types of luminous flux populations.

図３によって判るように、符号２２の光束母集団としてランク分けされたＬＥＤの光束（ｌｍ）は２２−２３であり、符号２３の光束母集団としてランク分けされたＬＥＤの光束（ｌｍ）は２３−２４であり、符号２４の光束母集団としてランク分けされたＬＥＤの光束（ｌｍ）は２４−２５であり、符号２５の光束母集団としてランク分けされたＬＥＤの光束（ｌｍ）は２５−２６であり、符号２６の光束母集団としてランク分けされたＬＥＤの光束（ｌｍ）は２６−２７であり、符号２７の光束母集団としてランク分けされたＬＥＤの光束（ｌｍ）は２７−２８である。   As can be seen from FIG. 3, the luminous flux (lm) of the LED ranked as the luminous flux population of symbol 22 is 22-23, and the luminous flux (lm) of the LED ranked as the luminous flux population of symbol 23 is 23. -24, the luminous flux (lm) of the LED ranked as the luminous flux population of 24 is 24-25, and the luminous flux (lm) of the LED ranked as the luminous flux population of 25 is 25-26. The luminous flux (lm) of the LED ranked as the luminous flux population of reference numeral 26 is 26-27, and the luminous flux (lm) of the LED ranked as the luminous flux population of reference numeral 27 is 27-28. .

この実施形態に係る面発光装置の製造工程では、図３のＢｉｎ Ｒｕｎｋ（ｎｅｗ）の欄に示したように、上記の６種類の光束母集団２２〜２７を、光束数値の大きい第１光束母集団群ａとそれよりも光束数値の小さい第２光束母集団群ｂとの２段階にランク分けすることが行われる。この実施形態では、第１光束母集団群ａのランクに４種類の光束母集団２４〜２７が含まれている。この第１光束母集団群ａに含まれるＬＥＤは、光束母集団２４〜２８に含まれる光束スペックの高いＬＥＤである。第２光束母集団群ｂのランクに２種類の光束母集団２２，２３が含まれている。この第２光束母集団群ａに含まれるＬＥＤは、光束母集団２２，２４に含まれるＬＥＤであって、第１光束母集団群ａに含まれるＬＥＤに比べてスペックが低い。   In the manufacturing process of the surface light emitting device according to this embodiment, as shown in the column of Bin Runk (new) in FIG. 3, the above six types of light beam populations 22 to 27 are used as the first light beam base having a large light beam value. Ranking is performed in two stages: a group group a and a second beam population group b having a smaller luminous flux value. In this embodiment, four types of light beam populations 24-27 are included in the rank of the first light beam population group a. The LEDs included in the first light flux population group a are LEDs with high light flux specifications included in the light flux populations 24-28. Two types of light beam populations 22 and 23 are included in the rank of the second light beam population group b. The LEDs included in the second light flux population group a are LEDs included in the light flux populations 22 and 24 and have lower specifications than the LEDs included in the first light flux population group a.

この実施形態に係る面発光装置では、図１を参照して説明した基本コンセプトにしたがって、光源ユニット１のバー２の長手方向の４箇所に区画形成されているｃｈ１，ｃｈ２，ｃｈ３，ｃｈ４の４つのチャンネルに所要数のＬＥＤが振り分けて配置される。具体的には、バー２の長手方向中央部２箇所の内側チャンネルｃｈ２，ｃｈ３に第１色度母集団群Ａ及び第１光束母集団群ａから任意に選択された所要数のＬＥＤが割り当てられる。また、内側チャンネルｃｈ２，ｃｈ３を挟む両側に位置している２箇所の外側チャンネルｃｈ１，ｃｈ４に、第１及び第２の色度母集団群Ａ，Ｂ及び第１及び第２の光束母集団群ａ，ｂの全範囲から任意に選択されたＬＥＤが割り当てられる。   In the surface light emitting device according to this embodiment, in accordance with the basic concept described with reference to FIG. 1, four of ch1, ch2, ch3, and ch4 that are partitioned at four locations in the longitudinal direction of the bar 2 of the light source unit 1 are formed. The required number of LEDs are distributed and arranged in one channel. Specifically, a required number of LEDs arbitrarily selected from the first chromaticity population group A and the first luminous flux population group a are allocated to the inner channels ch2 and ch3 at two central portions in the longitudinal direction of the bar 2. . In addition, the first and second chromaticity population groups A and B and the first and second luminous flux population groups are provided on two outer channels ch1 and ch4 located on both sides of the inner channels ch2 and ch3. LEDs arbitrarily selected from the entire range of a and b are assigned.

図４では、チャンネルごとに振り分けられるＬＥＤの色度（ＣＩＥ）に係る色度母集団群と光束（ｌｍ）に係る光束母集団群の種類を示してある。同図に示したように、上記の各工程を経ることにより、バー２の内側チャンネル内側チャンネルｃｈ２，ｃｈ３に上記第１色度母集団群Ａから任意に選択されたＬＥＤが割り当てられ、外側チャンネルｃｈ１，ｃｈ４に、第１及び第２の色度母集団群Ａ，Ｂの全範囲から任意に選択されたＬＥＤが割り当てられ、しかも、内側チャンネルｃｈ２，ｃｈ３に含まれるＬＥＤの全部が、光束数値の大きい第１光束母集団群ａに属し、外側チャンネルｃｈ１，ｃｈ４に含まれるＬＥＤが、第１及び第２の光束母集団群ａ，ｂの全範囲から任意に選択されていることになる。   FIG. 4 shows the types of the chromaticity population group related to the chromaticity (CIE) of the LEDs distributed for each channel and the luminous flux population group related to the luminous flux (lm). As shown in the figure, the LED arbitrarily selected from the first chromaticity population group A is assigned to the inner channel ch2 and ch3 of the bar 2 through the above steps, and the outer channel LEDs arbitrarily selected from the entire range of the first and second chromaticity population groups A and B are assigned to ch1 and ch4, and all of the LEDs included in the inner channels ch2 and ch3 are light flux values. LEDs belonging to the first luminous flux population group a having a large and included in the outer channels ch1 and ch4 are arbitrarily selected from the entire range of the first and second luminous flux population groups a and b.

以上説明した実施形態に係る面発光装置によると、光源ユニット１のバー２の長手方向４箇所に並んだ個々のチャンネルにＬＥＤが振り分けて割り当てられている。このため、バーでの個々のＬＥＤの配置位置をの一つ一つ個別に決定する必要がなく、各チャンネルごとにランク分けされた個々のＬＥＤの配置位置を決定することができるので、ＬＥＤの配置のための労力が軽減されてそのための工程が簡略化される。   According to the surface light emitting device according to the embodiment described above, the LEDs are distributed and assigned to the individual channels arranged in four places in the longitudinal direction of the bar 2 of the light source unit 1. For this reason, it is not necessary to individually determine the position of each LED on the bar, and the position of each LED ranked for each channel can be determined. Labor for placement is reduced and the process for it is simplified.

また、色度範囲内での色度母集団及び光束母集団、順方向電圧の組み合わせの数が６７２通りから第１及び第２の２通りの組み合わせに減少する。したがって、図４に示したように、内側チャンネルｃｈ２，ｃｈ３には第１色度母集団群Ａと第１光束母集団群ａとの１通りの組み合わせＡ−ａで得られるＬＥＤを割り当てるだけで済む。また、外側チャンネルｃｈ１，ｃｈ４には第１及び第２の色度母集団群Ａ，Ｂと第１及び第２の光束母集団群ａ，ｂとの４通りの組み合わせＡ−ａ，Ａ−ｂ，Ｂ−ａ，Ｂ−ｂで得られるＬＥＤを割り当てるだけで済む。したがって、ＬＥＤを組み合わせてバー２の各チャンネルに位置指定して配置することが簡略される。   In addition, the number of combinations of the chromaticity population, the luminous flux population, and the forward voltage within the chromaticity range is reduced from 672 to the first and second two combinations. Therefore, as shown in FIG. 4, only the LEDs obtained by one combination A-a of the first chromaticity population group A and the first luminous flux population group a are assigned to the inner channels ch2 and ch3. That's it. The outer channels ch1 and ch4 include four combinations Aa and Ab of the first and second chromaticity population groups A and B and the first and second luminous flux population groups a and b. , Ba, and Bb need only be assigned. Therefore, it is simplified that the LEDs are combined and positioned and designated in each channel of the bar 2.

さらに、色度範囲内に分布する全部のＬＥＤが光源ユニットでの使用対象になっていることにより、無駄なＬＥＤが発生しにくいという利点がある。   Furthermore, since all the LEDs distributed within the chromaticity range are used in the light source unit, there is an advantage that it is difficult to generate useless LEDs.

この実施形態では、バーのチャンネルを４つのチャンネルｈ１，ｈ２，ｈ３，ｈ４に分けた事例を説明したけれども、この点は、バーのチャンネルを３つのチャンネル、あるいは、５つより多いチャンネルに分けておいてもよい。３つのチャンネルに分けた場合は、中央の１つのチャンネルが内側チャンネルに相当し、その両側の２つのチャンネルが外側チャンネルに相当する。また、５つのチャンネルに分けた場合は、中央の３つのチャンネルが内側チャンネルに相当し、その両側の２つのチャンネルが外側チャンネルに相当する。   In this embodiment, the case where the bar channel is divided into four channels h1, h2, h3, and h4 has been described. However, this point is divided into three channels or more than five channels. It may be left. When the channel is divided into three channels, one central channel corresponds to the inner channel, and two channels on both sides thereof correspond to the outer channel. In the case of dividing into five channels, the central three channels correspond to the inner channel, and the two channels on both sides thereof correspond to the outer channel.

１ 光源ユニット
２ バー
１−１〜４，２−１〜４，３−１〜４，４−１〜４ 複数の色度母集団
２２〜２７ 複数の光束母集団
ｃｈ２，ｃｈ３ 内側チャンネル
ｃｈ１，ｃｈ４ 外側チャンネル
Ｓ 色度座標上の色度範囲
Ａ 第１色度母集団群
Ｂ 第２色度母集団群
ａ 第１光束母集団群
ｂ 第２光束母集団群 1 light source unit 2 bar 1-1 to 4, 2-1 to 4, 3-1 to 4, 4-1 to 4 plural chromaticity populations 22 to 27 plural luminous flux populations ch2, ch3 inner channel ch1, ch4 Outer channel S Chromaticity range on chromaticity coordinates A 1st chromaticity population group B 2nd chromaticity population group a 1st luminous flux population group b 2nd luminous flux population group

Claims (5)

色度座標上の色度範囲内で複数の色度母集団にランク分けされ、かつ、光束数値に応じた複数の光束母集団にランク分けされた多数のＬＥＤと、
多数の上記ＬＥＤの中から選択された所要数のＬＥＤが帯板状のバーに並べて搭載されてなる光源ユニットと、を備える面発光装置において、
上記バーの長手方向複数箇所に並び、上記光源ユニットに含まれる所要数の上記ＬＥＤが振り分けて割り当てられている個々のチャンネルを含み、
それらのチャンネルが、複数箇所の上記チャンネルの並び方向中央部に位置している内側チャンネルとその内側チャンネルを挟む両側に位置している外側チャンネルとに区画されていて、
上記内側チャンネルに、上記色度母集団及び上記光束母集団の全部から選択された色度スペックと光束スペックの高いＬＥＤが割り当てられていることを特徴とする面発光装置。 A number of LEDs ranked into a plurality of chromaticity populations within a chromaticity range on the chromaticity coordinates, and ranked into a plurality of luminous flux populations according to luminous flux values;
In a surface light emitting device comprising: a light source unit in which a required number of LEDs selected from a large number of the LEDs are arranged and mounted on a strip-shaped bar;
It is arranged in a plurality of locations in the longitudinal direction of the bar, and includes individual channels to which a required number of the LEDs included in the light source unit are allocated and allocated,
Those channels are divided into an inner channel located in the center of the plurality of channels in the arrangement direction and outer channels located on both sides sandwiching the inner channel,
2. A surface emitting device according to claim 1, wherein LEDs having a high chromaticity specification and a high luminous flux specification selected from all of the chromaticity population and the luminous flux population are assigned to the inner channel. 上記外側チャンネルに、上記色度母集団及び上記光束母集団の全部から任意に選択されたＬＥＤが割り当てられている請求項１に記載した面発光装置。   2. The surface emitting device according to claim 1, wherein the outer channel is assigned with an LED arbitrarily selected from all of the chromaticity population and the luminous flux population. 色度座標上の色度範囲内で複数の色度母集団にランク分けされ、かつ、光束数値に応じた複数の光束母集団にランク分けされた多数のＬＥＤと、
多数の上記ＬＥＤの中から選択された所要数のＬＥＤが帯板状のバーに並べて搭載されてなる光源ユニットと、を備える面発光装置において、
上記バーの長手方向複数箇所に並び、上記光源ユニットに含まれる所要数の上記ＬＥＤが振り分けて割り当てられている個々のチャンネルを含み、
それらのチャンネルが、複数箇所の上記チャンネルの並び方向中央部に位置している内側チャンネルとその内側チャンネルを挟む両側に位置している外側チャンネルとに区画されていて、
上記内側チャンネルに、全部の上記色度母集団を上記色度座標上で中央部に位置する第１色度母集団群とそれを取り囲んで位置する第２色度母集団群との２段階にランク分けすることによって得られる上記第１色度母集団群から任意に選択されたＬＥＤが割り当てられ、
上記内側チャンネルに含まれるＬＥＤの全部が、複数の上記光束母集団を光束数値の大きい第１光束母集団群とそれよりも光束数値の小さい第２光束母集団群との２段階にランク分けすることによって得られる上記第１光束母集団群に属していることを特徴とする面発光装置。 A number of LEDs ranked into a plurality of chromaticity populations within a chromaticity range on the chromaticity coordinates, and ranked into a plurality of luminous flux populations according to luminous flux values;
In a surface light emitting device comprising: a light source unit in which a required number of LEDs selected from a large number of the LEDs are arranged and mounted on a strip-shaped bar;
It is arranged in a plurality of locations in the longitudinal direction of the bar, and includes individual channels to which a required number of the LEDs included in the light source unit are allocated and allocated,
Those channels are divided into an inner channel located in the center of the plurality of channels in the arrangement direction and outer channels located on both sides sandwiching the inner channel,
In the inner channel, all the chromaticity populations are divided into two stages: a first chromaticity population group located in the center on the chromaticity coordinates and a second chromaticity population group located surrounding it. LEDs arbitrarily selected from the first chromaticity population group obtained by ranking are assigned,
All of the LEDs included in the inner channel rank the plurality of light flux populations into two stages: a first light flux population group having a larger light flux value and a second light flux population group having a smaller light flux value. A surface light emitting device belonging to the first luminous flux population group obtained by the above. 上記外側チャンネルに、第１及び第２の上記色度母集団群の全範囲から任意に選択されたＬＥＤが割り当てられ、
上記外側チャンネルに含まれるＬＥＤが、第１及び第２の上記光束母集団群の全範囲から任意に選択されている請求項３に記載した面発光装置。 An LED arbitrarily selected from the entire range of the first and second chromaticity population groups is assigned to the outer channel,
The surface emitting device according to claim 3, wherein the LEDs included in the outer channel are arbitrarily selected from the entire range of the first and second light flux population groups. 上記光源ユニットに含まれる所要数の上記ＬＥＤが、上記バーの長手方向に並んだ４つのチャンネルに振り分けて割り当てられ、
４つの上記チャンネルのうちの中央の２つのチャンネルが上記内側チャンネルとして定められ、それらの２つのチャンネルを挟む両側に位置する２つのチャンネルが上記外側チャンネルとして定められている請求項３又は請求項４に記載した面発光装置。 The required number of LEDs included in the light source unit are allocated and assigned to four channels arranged in the longitudinal direction of the bar,
5. The center two of the four channels are defined as the inner channel, and two channels located on both sides of the two channels are defined as the outer channel. The surface emitting device described in 1.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013232458A (en) * 2012-04-27 2013-11-14 Mitsubishi Electric Corp Led selection device, led selection program, and led selection method
WO2021176554A1 (en) 2020-03-03 2021-09-10 株式会社Ｆｕｊｉ Method for manufacturing light emitting unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113056060B (en) * 2020-09-30 2022-04-12 惠州华阳通用电子有限公司 LED chromaticity adjusting method and device
US20230365271A1 (en) * 2022-05-12 2023-11-16 Panasonic Avionics Corporation Programmable lighting methods and systems for a removable peripheral bar

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002109936A (en) * 2000-09-28 2002-04-12 Sanyo Electric Co Ltd Flat light source device and display device
JP2006267780A (en) * 2005-03-25 2006-10-05 Funai Electric Co Ltd Liquid crystal display apparatus

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6224240B1 (en) * 1996-09-13 2001-05-01 Matsushita Electric Industrial Co., Ltd. Light source
JP2001222242A (en) 2000-02-10 2001-08-17 Matsushita Electric Ind Co Ltd Display using light emitting diode
US7212359B2 (en) * 2003-07-25 2007-05-01 Texas Instruments Incorporated Color rendering of illumination light in display systems
US7066623B2 (en) * 2003-12-19 2006-06-27 Soo Ghee Lee Method and apparatus for producing untainted white light using off-white light emitting diodes
EP1790199B1 (en) * 2004-06-29 2013-08-14 Panasonic Corporation Illumination source
CN101313171B (en) * 2005-11-22 2010-05-19 皇家飞利浦电子股份有限公司 Illumination system with multiple sets of light sources
US7309152B2 (en) * 2005-11-23 2007-12-18 Unity Opto Technology Co., Ltd. Light source structure of backlight module
US8998444B2 (en) * 2006-04-18 2015-04-07 Cree, Inc. Solid state lighting devices including light mixtures
US7821194B2 (en) * 2006-04-18 2010-10-26 Cree, Inc. Solid state lighting devices including light mixtures
JP2008147563A (en) 2006-12-13 2008-06-26 Sharp Corp Manufacturing method of uniform backlight using led having variation
DE112008001265A5 (en) 2007-03-09 2010-02-11 Osram Opto Semiconductors Gmbh LED module
US7703943B2 (en) * 2007-05-07 2010-04-27 Intematix Corporation Color tunable light source
JP2009158903A (en) 2007-12-05 2009-07-16 Toshiba Lighting & Technology Corp Led light emitting unit and light-emitting device
TWI368794B (en) * 2008-05-21 2012-07-21 Au Optronics Corp Illuminant system using high color temperature light emitting diode and manufacture method thereof
CN102124263B (en) 2008-06-25 2013-07-24 克里公司 Solid state lighting devices including light mixtures
KR101269592B1 (en) * 2008-07-09 2013-06-05 엘지디스플레이 주식회사 LED organization method for liquid crystal display module
JP5274978B2 (en) 2008-10-28 2013-08-28 住友重機械工業株式会社 Hybrid construction machine
US8333631B2 (en) * 2009-02-19 2012-12-18 Cree, Inc. Methods for combining light emitting devices in a package and packages including combined light emitting devices
TWI383345B (en) * 2009-05-22 2013-01-21 Chunghwa Picture Tubes Ltd Display apparatus and light source device used in the display apparatus
JP5633051B2 (en) 2009-09-11 2014-12-03 株式会社大塚製薬工場 Medical multi-chamber container and method of use thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002109936A (en) * 2000-09-28 2002-04-12 Sanyo Electric Co Ltd Flat light source device and display device
JP2006267780A (en) * 2005-03-25 2006-10-05 Funai Electric Co Ltd Liquid crystal display apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013232458A (en) * 2012-04-27 2013-11-14 Mitsubishi Electric Corp Led selection device, led selection program, and led selection method
WO2021176554A1 (en) 2020-03-03 2021-09-10 株式会社Ｆｕｊｉ Method for manufacturing light emitting unit

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